I don't think this reciever even supports Dolby Pro-Logic?? ie: there is no defined center channel information and anything it puts out will be like an "emulated" center. You would need to plug this center preamp out into another amp's preamp input. Complete waste of time unless you are really bored.
There is another post on the net like this about a sub. Once again, no seperate sub data - just wire the sub in series or parallel with the fronts on the speaker wires. Series if you want the lows filtered, parallel if you want the fronts full-range. Or you can do RCA outs (like a VCR out) to the sub, except this wont be volume controlled and is therefore useless.)
